<!--********************************************************************
* Copyright© 2000 - 2025 SuperMap Software Co.Ltd. All rights reserved.
*********************************************************************-->
<!--********************************************************************
* 该示例需要引入
* deck.gl (https://github.com/visgl/deck.gl)
*********************************************************************-->
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=Edge">
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
    <title data-i18n="resources.title_graphicLayer_webgl"></title>

    <style>

        #title {
            position: absolute;
            color: white;
            text-align: center;
            width: 600px;
            left: 0; 
            top: 0; 
            right: 0; 
            margin: auto
        }

        #title > h3 {
            margin: 10px 0;
            letter-spacing: 0.1em;
        }

        #title > h6 {
            margin: 0;
            font-weight: normal;
        }

        .ol-popup {
            position: absolute;
            background-color: white;
            -webkit-filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.2));
            filter: drop-shadow(0 1px 4px rgba(0, 0, 0, 0.2));
            padding: 15px;
            border-radius: 10px;
            border: 1px solid #cccccc;
            bottom: 12px;
            left: -50px;
            min-width: 50px;
        }

        .ol-popup:after, .ol-popup:before {
            top: 100%;
            border: solid transparent;
            content: " ";
            height: 0;
            width: 0;
            position: absolute;
            pointer-events: none;
        }

        .ol-popup:after {
            border-top-color: white;
            border-width: 10px;
            left: 48px;
            margin-left: -10px;
        }

        .ol-popup:before {
            border-top-color: #cccccc;
            border-width: 11px;
            left: 48px;
            margin-left: -11px;
        }

        .ol-panel {
            position: absolute;
            top: .5em;
            right:0;
            z-index: 10;
        }

    </style>
</head>
<body style=" margin: 0;overflow: hidden;background: #fff;width: 100%;height:100%; position: absolute;top: 0;">
<div id="map" style="width: 100%;height:100%"></div>

<div id="popup" class="ol-popup">
    <div id="popup-content"></div>
</div>
<div id="title">
    <h3 data-i18n="resources.text_graphicLayer_title"></h3>
    <h6 data-i18n="resources.text_graphicLayer_subTitle"></h6>
</div>
<div id="control" class="ol-panel"></div>
<script type="text/javascript" include="papaparse,dat-gui,widgets" src="../js/include-web.js"></script>
<script type="text/javascript" include="deck" src="../../dist/ol/include-ol.js"></script>
<script type="text/javascript">
    var url = (window.isLocal ? window.server : "https://iserver.supermap.io") + "/iserver/services/map-china/rest/maps/ChinaDark";

    var map, overlay, graphicLayer;

    new ol.supermap.MapService(url).getMapInfo(function (serviceResult) {
        var mapJSONObj = serviceResult.result;
        var container = document.getElementById('popup');
        overlay = new ol.Overlay(({
            element: container,
            autoPan: true,
            autoPanAnimation: {
                duration: 250
            }
        }));
        map = new ol.Map({
            target: 'map',
            // ol v7版本用法为ol.control.defaults.defaults； v6版本以下用法为ol.control.defaults
            controls: ol.control.defaults.defaults({attributionOptions: {collapsed: false}})
                .extend([new ol.supermap.control.Logo({ link: "https://iclient.supermap.io" })]),
            view: new ol.View({
                center: ol.proj.transform([-73.9286, 40.75], 'EPSG:4326', 'EPSG:3857'),
                zoom: 11,
                projection: 'EPSG:3857',
                multiWorld: true
            }),
            overlays: [overlay]
        });
        var options = ol.source.TileSuperMapRest.optionsFromMapJSON(url, mapJSONObj);
        var layer = new ol.layer.Tile({
            source: new ol.source.TileSuperMapRest(options)
        });
        map.addLayer(layer);
        // var raster = new ol.layer.Tile({
        //     source: new ol.source.OSM()
        // });
        // map.addLayer(raster);

        widgets.loader.showLoader("data loading...");
        Papa.parse('../data/nyc-taxi.csv', {
            download: true,
            skipEmptyLines: true,
            header: true,
            error: function () {
                widgets.loader.removeLoader();
                alert("parse error")
            },
            complete: function (results) {
                widgets.loader.removeLoader();
                addGraphicLayer(results.data);
            }
        });

    });

    function addGraphicLayer(data) {
        var graphics = [], count = data.length;

        for (var i = 0; i < count; ++i) {
            var coods = data[i];
            var coordinates = [parseFloat(coods.lng), parseFloat(coods.lat)];
            if (coordinates[0] === coordinates[1]) {
                continue;
            }
            coordinates = ol.proj.transform(coordinates, 'EPSG:4326', 'EPSG:3857');
            graphics[i] = new ol.Graphic(new ol.geom.Point(coordinates));
        }
        var graphicStyle = {
            color: [0, 255, 128, 255],
            highlightColor: [255, 0, 0, 255],
            radius: 0.5
        };
        map.once('postrender', function () {
            var content = document.getElementById('popup-content');
            graphicLayer = new ol.layer.Image({
                source: new ol.source.Graphic({
                    render: "webgl",
                    graphics: graphics,
                    color: graphicStyle.color,
                    highlightColor: graphicStyle.highlightColor,
                    radius: graphicStyle.radius,

                    map: map,
                    onClick: function (graphic) {
                        if (graphic) {
                            var coords = graphic.lngLat;
                            content.innerHTML = resources.text_coordinate + ":[" + coords[0] + "," + coords[1] + "]";
                            overlay.setPosition(ol.proj.transform(coords, 'EPSG:4326', 'EPSG:3857'));
                            return;
                        }
                        overlay.setPosition(undefined);
                    }
                })
            });
            map.addLayer(graphicLayer);
        });
        initDatGui(graphicStyle)
    }

    //设置面板
    function initDatGui(options) {

        var gui = new dat.GUI();

        var popup = document.getElementById('control');
        popup.appendChild(gui.domElement);
        var control = new ol.control.Control({element: popup});
        control.setMap(map);
        map.addControl(control);

        gui.addColor(options, 'color').onChange(finished);
        gui.add(options, 'radius', 0, 2).onChange(finished);

        function finished() {
            graphicLayer.getSource().setStyle(options);
        }
    }

</script>
</body>
</html>
